Pump-jack.



No. 674,662. Patented May 2|, l90l.

6. ALDERSON.

PUMP JACK.

Application filed Jan. 25, 1901.) (No Model.)

Weak-$525,

I r W f/WW GEORGE ALDERSON, OF LASALLE,

ILLINOIS, ASSIGNOR TO CHARLES BRUNNER, OF PERU, ILLINOIS.

PUM P-JACK.

SPECIFICATION forming part of Letters Patent N 0. 674,662, dated May 21, 1901.

Application filed January 25 1901. Serial No. 44,747. kNo model.)

T0 on whom it may concern:

Be it known that I, GEORGE ALDERSON, of Lasalle, Illinois, have invented certain new and useful Improvements in Pump-Jacks, of which the following is a specification.

My invention relates to a class of devices, commonly known as pump-jacks, which are designed to .be used in connection with ordinary hand or windmill pumps and constitute a convenient mechanism through or by means of which power other than usual hand or wind power may, when found necessary or desirable, be applied .to operate the pump-as, for instance, by a steam-engine, gas or oil engine, water-wheel, 850.

The object of the invention is to provide a simple, cheap, and effective device of the character described, including also means for rendering the same readilyattachable to and detachable from a pump and also a mechanism whereby the jack may be applied to pumps of varying sizes; and the invention consists in the matters hereinafter set forth.

My invention is illustrated in the accompanying drawings,.in which- Figure 1 is a front elevation of my improved pump-jack, shown as applied to the lower end of a tubular pump body or casing. Fig. 2 is a side elevation of the same with the driving-pulleys omitted; and Fig. 3 is a horizontal transverse section on the irregular line 3 3 of Fig. 2 through the tubular pump-body and the clamping device for securing the jack thereto.

7, integrally and transversely of which are formed a series of sleeves 9, 10, 11, 12, and 13, forming j ournal-bearin gs for a series of short shafts 14, 15, and 16, onwhich are secured certain power-transmitting and speed-reducing gears, as hereinafter specified. In the sleeves 9 and 10 is rotatably journaled the shaft 14., which carries at its outer end fast and loose pulleys 17 and 18, respectively, which latter are adapted to receive a drivingbelt from the engine or other source of power. On this shaft 14 is also fixedly mounted between the webs 6 aud 7 a pinion 19, which engages a gear 20, similarly keyed on the transverse shaft 15. On the outer opposite end of the latter shaft is keyed another pinion 21, which meshesv with a large gear 22, fast on one end of the upper transverse shaft 16. On the opposite end of the shaft 16 is fixedly keyed a crank-arm 23, the latter having at its outer end a wristpin 24, which engages the lower end of a pitman-rod 25. In the outer face of the gear 22 is secured a wrist-pin 26, which is disposed in axial alinement with the wrist-pin 24. The wrist-pin 26 engages thelower end of a pitrnan-rod 27, and the two parallel pitman-rods and 27 are adjustably connected at their upper ends to the opposite ends of a cross-head 28 on the piston-rod 29 of the pump. As a convenient means for adjustably connecting said cross= head and pitman-rods I provide a longitudinal series of transverse holes or apertures 30 through the upper portion of each rod, opposite pairs of which may engage the ends of the cross-head, according to the height of the latter above the lower end of the pump-body to which the power-transmitting mechanism hereinabove described is applied.

The bracket 5 and its contained mechanism may be detachably secured to the pumpbody 4: in any desired or approved manner;

but the improved mechanism Which I have,

devised for this purpose and which constitutes a feature of the invention is constructed as follows: The lower portion or shank of the bracket 5, which may be designated by the numeral 31, is extended laterally of the bracket on each side to partially embrace the pump-head body, its'outer face having a substantially semicylindrical form, while its inner face is provided with a longitudinal groove 32, the opposite sides of which are designed to have. a longitudinal bearing upon the outer surface of the cylindrical pumpbody 4, as plainly shown in Fig. 3.

33designates a suitable clamp-block ofa length substantially equal to that of the shank 31 of bracket 5, and this clamp-block 33 is 7 going description.

provided on its inner face with a groove 34:, similar in all respects to the groove 32, above described. The clamp-block 33 is provided with integral lugs or ears 35, which are apertured to receive the parallel ends of a pair of bent tie-rods 36, the loop portion of said tie-rods passing around suitable guides 37, formed on the outer face of the shank 31 of bracket 5. Nuts 38, screwing over the threaded ends of the tie-rods 36, serve to clamp the clamp-block 33 and the bracket-shank 31 into fixed and rigid engagement with the pumpbody 4.

The application and operation of my improved pump-jack will be plain from the fore- By means of the clamping mechanism described the jack can be applied to pumps of varying diameter and length, the power receiving and transmitting mechanism being applicable at any suitable and convenient point on the pump-body, The longitudinal adjustment to suit pumps of varying heights may also be readily effected by means of the vertical series of transverse apertures 30, formed through the upper portions of the pitman-rods 25 and 27, any opposite pair of said apertures being capable of engagement with the fixed cross-head 28 on the piston-rod 29. By disconnecting said pitman-rods from the cross-head and subsequently connecting the handle of the pump to the piston-rod 29 or by connecting the pitman of the Windmill to said piston-rod 29 the jack may be thrown out of action and the hand or windmill operating means applied whenever desired.

1. A pump-jack comprising a supportingbracket having a shank portion adapted to be secured to a pump-body, and having a pair of Webs formed integrally with the body portion of the bracket, a series of shafts journaled upon said webs, a train of power-transmitting gears upon said shafts, operative connections between said power-transmitting mechanism and the pump-rod, and means for operatively connecting the pump-jack with the source of power.

2. A pump-jack comprising a supportingbracket having a shank portion adapted to partially embrace and to be secured to a pump-body, and having a pair of web-like flanges formed integrally with the body of said bracket, a series of transversely-extending journal-sleeves formed integrally with and extending between said flanges, a train of power-transmitting gears mounted upon said shafts, operative connections between the last element of said train of gears and the pump-rod, and fast and loose pulleys upon the shaft of the first gear of said train, substantially as described.

3. In a pump-jack, the combination with the supporting-bracket 5, having the integral parallel web-like flanges 6, 7, the series of shafts 14, 15, 16, journaled therein in parallel relation, the train of gears 19, 20, 21 and 22 upon said shafts, the fast and loose pulleys 17, 18 upon the shaft 14:, the parallel cranks, the pair of pitmen connected thereon, and the cross-head with which said pitinen are operatively engaged, substantially as described.

GEORGE ALDERSON. Witnesses:

HENRY BEAM, JOSEPH J. LINNIG. 

